Study the effect of polymers on the stability and rheological properties of oil-in-water (O/W) Pickering emulsion muds
Abstract
A new type of oil-in-water (O/W) Pickering emulsion systems, which were prepared by polymers such as xanthan gum, carboxymethyl cellulose (CMC), and sodium lignosulfonate have been investigated for their properties as multifunctional emulsion muds with respect to rheological control and filtration control properties. Diesel oil was used as dispersed phase and KCl-brine as continuous phase in the developed emulsions. Initially, rheological parameters like apparent viscosity, plastic viscosity, gel strength, and filtration control properties were measured using recommended practices. Emulsion stability was analyzed using steady state shear stress-shear rate and oscillatory (dynamic) rheological measurement techniques. The emulsions were found to exhibit shear-thinning (pseudoplastic) behavior. Experiments conducted for oscillatory rheological measurements have shown that emulsions are stable as per the stability criteria G' (elastic modulus) > G'' (loss modulus) and both are independent of changing ω (Frequency). These fluids have shown stable properties upto 70°C which shows that they can be used as drilling muds for drilling oil and gas wells.
- Publication:
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Korea-Australia Rheology Journal
- Pub Date:
- May 2018
- DOI:
- 10.1007/s13367-018-0013-y
- Bibcode:
- 2018KARJ...30..127J
- Keywords:
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- Pickering emulsion;
- emulsion mud;
- depleted reservoir;
- elastic modulus;
- loss modulus